Accession Number:

ADA248063

Title:

Development of a System for Survey of Radon Concentration of the Dayton Area Using a Liquid Scintillation Counter and Analysis of the Data

Descriptive Note:

Master's thesis

Corporate Author:

AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING

Personal Author(s):

Report Date:

1992-03-01

Pagination or Media Count:

90.0

Abstract:

A system to do a large scale survey was developed. The data obtained from the survey was analyzed using a database. The database incorporated an equation for converting cpm into radon concentration pCi1. The equation of conversion, protocol for measuring radon concentration, survey form, and a database program were modified from previous theses or developed for this thesis. The elution time constant, adsorption time constant, and calibration factor were calculated for equation of conversion. Two surveys were during the course of the thesis. On the first survey, the arithmetic average radon concentration with standard error of the mean was 2.9 0.5 pCi1. The geometric mean G.M. was 1.5 pCi1 with geometric standard deviation of 2.7 pCi1. There were 85 samples taken during the first survey. On the second survey, with 156 samples The arithmetic average and std. deviation was 3.8 0.3 pCil. The G.M. was 3.8 pCil with geometric std. deviation of 2.2 pCi1. The second survey was done during winter using a modified survey form. The results from both surveys indicated a log-normal distribution. The system is in process of begin certified by the EPA. The system is ready to be used for larger scale survey. Radon, Liquid scintillation analyzer, Radon survey, Radon database, LS vials, Radon measurement.

Subject Categories:

  • Nuclear Radiation Shielding, Protection and Safety

Distribution Statement:

APPROVED FOR PUBLIC RELEASE